many_years_after wrote in news:1164467660.760671.145440
@j44g2000cwa.googlegroups.com in comp.lang.python:
> class mythread(threading.Thread):
> def __init__(self, threadname):
> threading.Thread.__init__(self, name = threadname)
>
> def run(self):
> print 'i am running'
> print 'i quit run()'
>
> thread = mythread('1')
> thread.start()
> print threading.activeCount() ## 1 , this means the thread is active
> if not thread.isAlive():
> print 'i am dead,you can restart' ### OK, this is executed. this
> means the thread is no alive
> thread.start() #### " thread already started "
>
> This program presentes that the thread quit the *run()* func and is
> active but not alive. How to understand this? It is said if the
> thread quit the *run()* func , it's dead.
> how to restart it ?
>
> Thanks
>
Form the manual [1] (you must have missed this):
start( )
Start the thread's activity.
This must be called at most once per thread object.
It arranges for the object's run() method to be invoked
in a separate thread of control.
Note the 2nd line:
This must be called at most once per thread object.
so you simply can't restart a Thread object.
[1] http://docs.python.org/lib/thread-objects.html
Rob.
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